Update app.py

app.py

@@ -81,15 +81,22 @@ if st.button("🔮 開始預測"):
     st.subheader("🧠 模型決策解釋圖（SHAP Waterfall plot）")
 
     shap_values = explainer(input_df)
-    ax = shap.plots.waterfall(shap_values[0], show=False)
 
-    # 強制為每個文字物件設定中文字型，避免顯示方塊
-    if chinese_font_prop:
-        for text in ax.texts:
-            text.set_fontproperties(chinese_font_prop)
-            # 修正負號顯示問題（使用 ASCII 減號）
-            if text.get_text().startswith('\u2212'):
-                text.set_text(text.get_text().replace('\u2212', '-'))
+# 改 feature_names
+feature_name_map = {
+    "航線組合數": "Route Count",
+    "年": "Year",
+    "月": "Month",
+    "船舶種類_編碼": "Ship Type Code"
+}
+shap_values.feature_names = [feature_name_map.get(f, f) for f in shap_values.feature_names]
+
+ax = shap.plots.waterfall(shap_values[0], show=False)
+
+# 負號替換
+for text in ax.texts:
+    if text.get_text().startswith('\u2212'):
+        text.set_text(text.get_text().replace('\u2212', '-'))
 
     st.pyplot(ax.figure)
     plt.close(ax.figure)